每日钉一下（家庭储蓄率多少比较合适呢？）

Group 1 - The article emphasizes that different regional stock markets do not move in unison, allowing investors to seize more investment opportunities [2][3] - Global investment can significantly reduce volatility risk, making it an attractive strategy for investors [2] - The article promotes a free course on investing in global stock markets through index funds, highlighting the potential for long-term gains from global market growth [2][3] Group 2 - The course includes additional resources such as course notes and mind maps to facilitate efficient learning about global index investment [3]